EP 1308820 A3 20030709 - Encrypted program distribution system using computer network

Title (en)

Encrypted program distribution system using computer network

Title (de)

System zur Verteilung eines verschlüsselten Programms durch ein Netzwerk

Title (fr)

Système de distribution de logiciels criptés utilisant un réseau informatique

Publication

EP 1308820 A3 20030709 (EN)

Application

EP 01309273 A 20011031

Priority

JP 2000332068 A 20001031

Abstract (en)

[origin: US2002053024A1] In a program distribution system including a source file sending device, an encrypted program distribution device and an execution file receiving device, which are interconnected through a network, the encrypted program distribution device examines the source file received from the source file sending device, and when the source file passes an examination, an execution file of the program is generated from the source file, a public key which is either unique to an execution file receiving device or unique to a processor of the execution file receiving device is received from the execution file receiving device through the network, at least a part of the execution file is encrypted by using the public key, and the execution file is sent to the execution file receiving device.

IPC 1-7

G06F 1/00

IPC 8 full level

G06F 12/14 (2006.01); G06F 21/10 (2013.01); G06F 21/12 (2013.01); G06F 21/14 (2013.01); G06F 21/60 (2013.01); G06F 21/62 (2013.01); G09C 1/00 (2006.01); H04L 9/08 (2006.01)

CPC (source: EP US)

G06F 21/125 (2013.01 - EP US); G06F 21/6254 (2013.01 - EP US); H04L 63/0428 (2013.01 - EP US); H04L 63/0823 (2013.01 - EP US); H04L 63/123 (2013.01 - EP US); H04L 67/06 (2013.01 - EP US); G06F 2221/2135 (2013.01 - EP US)

Citation (search report)

[X] US 6108420 A 20000822 - LAROSE GORDON EDWARD [CA], et al
[A] WO 0110076 A2 20010208 - INTERTRUST TECH CORP [US]
[A] EP 0665486 A2 19950802 - AT & T CORP [US]
[A] US 5845281 A 19981201 - BENSON GREG [SE], et al

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

DOCDB simple family (publication)

US 2002053024 A1 20020502; EP 1308820 A2 20030507; EP 1308820 A3 20030709; JP 2002140126 A 20020517; JP 4067757 B2 20080326

DOCDB simple family (application)

US 98471701 A 20011031; EP 01309273 A 20011031; JP 2000332068 A 20001031